Human female excrement in the form of small, Chicken McNugget shaped particles resembling rabbit or sheep droppings.
The male's leavings are generally far larger in length and girth, often resembling a fallen tree or log, which is where the slang term originates from.
If one finds giblets inhabiting his/her toilet bowl, they can be almost certain that the culprit was either a woman or small child. They can also be grateful that the offender was not an adult male as the results would be of a far more serious nature.
That being said, on occasion, females have been known to rival males in this area.